CM108B Datasheet, PDF (6/24 Pages) C-Media Electronics – A Highly Integrated USB Audio Single Chip

CM108B
USB Audio Single Chip
4 Pin descriptions
4.1 Pin assignment by pin number
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
Signal Name
SPDIFO
DR
DW
SK
CS
MUTER
PWRSEL
DREG18
DREG33
MODE
N.C.
LEDO
Pin #
13
14
15
16
17
18
19
20
21
22
23
24
Signal Name
GPIO3
DVSS
GPIO4
SDIN
ADSCLS
MUTEP
ADLRCK
ADMCLK
LEDR
ADSEL
TEST
AVSS
Pin #
25
26
27
28
29
30
31
32
33
34
35
36
Signal Name
VBIAS
VREF
MICIN
N.C.
AVDD
LOL
LOBS
LOR
AVSS
AVDD
DVDD
DVSS
Pin #
37
38
39
40
41
42
43
44
45
46
47
48
Signal Name
AREG36
MSEL
VOLUP
PDSW
USBDP
USBDM
GPIO1
SDOUT
DAMCLK
DALRCK
DASCLK
VOLDN
4.2 Pin-out diagram
AREG36
37
MSEL
38
VOLUP
39
PDSW
40
USBDP
41
USBDM
42
GPIO1
43
SDOUT
44
DAMCLK
45
DALRCK
46
DASCLK
47
VOLDN
48
CM108B
LQFP-48
24
AVSS
23
TEST
22
ADSEL
21
LEDR
20
ADMCLK
19
ADLRCK
18
MUTEP
17
ADSCLK
16
SDIN
15
GPIO4
14
DVSS
13
GPIO3
Pin Assignments (top view)
Datasheet Revision: 1.11
Page 6 / 24
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